3.6. Two-phase flow pressure drop

The formula for calculating the pressure drop for two-phase fluids in pipes is analogous to the equivalent single-phase flow version shown in Eqn (3.19), except that the friction factor and physical properties are replaced by their two-phase equivalents:


image (3.68)

The pressure loss term in Eqn (3.34) includes a two-phase friction factor, fM. In the past, researchers have spent much effort in developing predictive correlations for the two-phase friction factor, as well as the slip liquid holdup term.
Definitions of the mixture density (ρm) and mixture friction factor (fm) terms ...

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